Yes I always wonder why these types don't just shoot themselves first. You could be right that they need put themselves in a position where they have to. But they also just might be spiteful and wish to actually hurt as many people as they can. Either way its a metal health issue.

Quoting: Anonymous Coward 30772722

I really think it's just a selfish way for them to get up the courage to go through with it.

Quoting: Morning Cup Of Doom

You're probably right I guess someone who really enjoyed killing would want to stick around to enjoy it some more.